The way Ring central works is a one for one. One user account or line to one device. Now, there are always options.

Here are a couple of suggestions.

Bring your phone home with you when you work at home. Not the best option but it will work if you are at home 2 or 3 days a week. Just like carrying your laptop.

Use call forwarding rules to forward to a different phone at your home office.. People will still be able to call the same number but depending on your schedule the call will be forwarded to another phone.

Not sure if you like any of these but I just thought I would throw a couple options out there.